31116138427888 has 40 divisors (see below), whose sum is σ = 60823640631600. Its totient is φ = 15420092550144.

The previous prime is 31116138427823. The next prime is 31116138427943. The reversal of 31116138427888 is 88872483161113.

It is a happy number.

It is a super-2 number, since 2×31116138427888² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10478023 + ... + 13115686.

It is an arithmetic number, because the mean of its divisors is an integer number (1520591015790).

Almost surely, 2^{31116138427888} is an apocalyptic number.

It is an amenable number.

31116138427888 is a deficient number, since it is larger than the sum of its proper divisors (29707502203712).

31116138427888 is a wasteful number, since it uses less digits than its factorization.

31116138427888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23594449 (or 23594443 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 61.

The spelling of 31116138427888 in words is "thirty-one trillion, one hundred sixteen billion, one hundred thirty-eight million, four hundred twenty-seven thousand, eight hundred eighty-eight".